Section 10B(1) in The West Bengal School Service Commission Act, 1997
(1)Notwithstanding anything contained in any other law for the time being in force or in any contract to the contrary, the Central Commission may, on the basis of application made to it in the prescribed proforma by an eligible Teacher, make recommendation for placing his service from one school to another school having same category of vacant post, on general transfer basis, in such manner, on such condition and within such period, as may be prescribed:Provided that such general transfer of an eligible teacher shall be made between two posts of same category of vacancies, posts and subjects in schools with same medium of instruction.